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This rapid curing, highly flexible visible light cure adhesive formulation, Loctite 3974, is offered for medical bonding, potting, and sealing applications. Curing tack-free in seconds, this adhesive permanently bonds materials with differing coefficients of thermal expansion and easily accommodates substrate expansion and contraction. The adhesive is a low modulus, single-component acrylic adhesive that cures rapidly on exposure to UV or visible light. It can be used on glass, thermoplastic, and metal assemblies that must withstand extreme thermal cycling and environmental exposure. Loctite 3974 has a Shore hardness of A70 and an elongation of 10%, making it ideally suited for highly flexible components.


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